I remember! Power = IV watts Wow that was a deeply buried memory!
Ian On 16 Dec 2011, at 13:15, "bobbycrai...@tiscali.co.uk" <bobbycrai...@tiscali.co.uk> wrote: > Just remember the formula > Power = Volts x Amps, so - > > 55watts = 12Volts x ? amps > ? amps = 55/12 > amps = 4.58 > > Bob > >> ----Original Message---- >> From: chris.young...@gmail.com >> Date: 16/12/2011 9:13 >> To: <quantumowners@googlegroups.com> >> Subj: Re: [Quantum Owners] Re: Xtreme - Wiring load capacity? >> >> hi guys, >> >> yep I will be adding a relay in.. I was just looking for > opinions > >> on the load rating of the wires... as we don't know, the safe option > >> it will be. > >> > >> cheers > >> > >> On 16 December 2011 02:55, Andy Cowley (Q2-379) > >> <andycowle...@netscape.net> wrote: > >>> How about playing it safe & buying one of those pre-wired looms you > >>> can get for driving/fog lamps that have all the wires, relays, > >>> connectors etc? > >>> > >>> I'm sure I've seen them in Halfords for about £13 > >>> > >>> Andy C > >>> > >>> > >>> On Dec 14, 7:32 pm, Dave the Subbie <dave_the_sub...@hotmail.com> > >>> wrote: > >>>> Are the fuses for the switched supplies actually fed by the > ignition > >>>> switch, or by a relay actuated by the ignition switch, which is > how > >>>> the Fiestas, and most other cars do it? > >>>> > >>>> Otherwise, it would be an awfully large current for a small rotary > >>>> switch, and I'd be tempted to wire a relay in. > >>>> > >>>> However, are you saying that the headlights only have one fuse for > dip > >>>> and one for main beam? That would be very dangerous, because a > single > >>>> fault could put both lights out. Happened to me once on a country > lane > >>>> on a motorbike, and I have no intention of repeating it. There > should > >>>> be four fuses: LH Dip, RH Dip, LH Main and RH Main. The driving > lights > >>>> could be off a single fuse, because you'd still have the main > beams, > >>>> of course. > >>>> > >>>> At the risk of stating the obvious (again..!), the current to a > single > >>>> 55W lamp at 12V is 55/12 = 4.6 Amps. Usual fuse size would be 10A, > or > >>>> roughly double, but don't forget that the fuse is there to protect > the > >>>> wiring, so the wiring must be capable of handling that current > >>>> continuously. If cable is run in a loom it must be de-rated from > its > >>>> nominal rating, as it doesn't cool as well. I'd tend to use 2mm2 > >>>> cable, which is rated at 17.5A nominal, or 3mm2 cable and a 15A > fuse > >>>> if both lamps on one fuse. A bit conservative, but safety isn't a > bad > >>>> thing. > >>>> > >>>> Oh, and I assume that the headlights have different earth points > for > >>>> Left and Right, for the same reasons as described earlier? > >>>> > >>>> Dave > >>>> > >>>> On Dec 14, 3:30 pm, Chris Young <chris.young...@gmail.com> wrote: > >>>> > >>>> > >>>> > >>>>> the fuse box is powered from 3 feeds if i remember correctly. > >>>> > >>>>> the side lights go from the battery to the stalk switch then to > the > >>>>> fuse box. so the side lights can be on when the ignition is off > >>>> > >>>>> there is another feed from the battery which goes to a fuse tha > >>>>> powers the hazards and horn - so always on. > >>>> > >>>>> the others, are fed off the feed to the ignition switch. > >>>> > >>>>> so yes, you turn the ignition off and the dipped / main beam > lights go > >>>>> off, leaving the sides on. indicators and heater fan also go > off... > >>>> > >>>>> cheers > >>>> > >>>>> On 14 December 2011 15:23, Jim Hearne <j...@quantums.info> > wrote: > >>>> > >>>>>> I know it didn't use the Sierra loom but as it uses the column > switches the > >>>>>> wiring must be fairly similar. > >>>> > >>>>>> All the fuse box circuits are powered from the ignition switch > ? > >>>>>> That's a bit unusual, usually it some and some. > >>>>>> Do the lights all go out on an Xtreme when you turn the > ignition off ? > >>>> > >>>>>> Jim > >>>> > >>>>>> -------------------------------------------------- > >>>>>> From: "Chris Young" <chris.young...@gmail.com> > >>>>>> Sent: Wednesday, December 14, 2011 3:19 PM > >>>>>> To: <quantumowners@googlegroups.com> > >>>>>> Subject: Re: [Quantum Owners] Xtreme - Wiring load capacity? > >>>> > >>>>>>> thanks Jim > >>>> > >>>>>>> The Xtreme doesn't use the sierra loom, it has its own. You > are right > >>>>>>> tho in that the stalks only control the relays for main and > dipped > >>>>>>> beam. However, the fuse box is powered from the ignition > switch. > >>>> > >>>>>>> your correct way is my non lazy way :) which I fully agree > with. > >>>> > >>>>>>> On 14 December 2011 15:03, Jim Hearne <j...@quantums.info> > wrote: > >>>> > >>>>>>>> The power for the headlights shouldn't go through an ignition > switched > >>>>>>>> circuit. > >>>>>>>> As far as i can remember of the Sierra wiring, the light > switch on the > >>>>>>>> column only switch relays which should have a permanent live > feed, not > >>>>>>>> ignition. > >>>>>>>> I doubt if the wiring was rated to handle twice it's normal > load. > >>>> > >>>>>>>> The correct way is to fit an extra relay, connect it's coil > to one of the > >>>>>>>> existing main beam circuits and power the relay directly from > the battery > >>>>>>>> via a fuse. > >>>>>>>> This way you are putting no extra load on the existing > wiring. > >>>> > >>>>>>>> Jim > >>>> > >>>>>>>> -------------------------------------------------- > >>>>>>>> From: "Chris Young" <chris.young...@gmail.com> > >>>>>>>> Sent: Wednesday, December 14, 2011 2:47 PM > >>>>>>>> To: <quantumowners@googlegroups.com> > >>>>>>>> Subject: [Quantum Owners] Xtreme - Wiring load capacity? > >>>> > >>>>>>>>> Hi all, > >>>> > >>>>>>>>> So I was driving back to Wimbledon from Banbury a few weeks > a go at > >>>>>>>>> night in the Xtreme, I went via Oxford ish and picked some > nice > >>>>>>>>> country roads to drive on.. when I realised that it would be > great to > >>>>>>>>> be able to see where I was going like I can in > production road car - > >>>>>>>>> ie the Main Beam is a bit naff !! > >>>> > >>>>>>>>> So I have bought a pair of 55w Driving Lamps to add on. > >>>> > >>>>>>>>> My question is does anyone have any idea as to what the > rating is for > >>>>>>>>> the wiring that would be involved if I patched these onto > the present > >>>>>>>>> main beam wiring. > >>>> > >>>>>>>>> At present > >>>> > >>>>>>>>> white ignition wire would have extra load on it? any idea > what it is > >>>>>>>>> rated at amps wise? > >>>> > >>>>>>>>> the main beam relay is fed from one 15amp fuse then each > bulb has a > >>>>>>>>> separate wire from the same relay out post. > >>>> > >>>>>>>>> I would need to up the fuse to 20amps at least, probably 25. > then I > >>>>>>>>> could tack the extra lights one onto each main beam feed so > they come > >>>>>>>>> on at the same time. Any ideas on what these wires are > rated as ? > >>>> > >>>>>>>>> any thoughts? > >>>> > >>>>>>>>> (The unlazy and safe option if I can't find out any of the > above is to > >>>>>>>>> add another relay and power them separately. Trying to be > lazy if I > >>>>>>>>> can just add them on it will be a quickish job, adding the > wiring a > >>>>>>>>> lot longer and more costly) > >>>> > >>>>>>>>> cheers > >>>> > >>>>>>>>> Chris > >>>> > >>>>>>>>> -- > >>>>>>>>> You received this message because you are subscribed to the > Google > >>>>>>>>> Groups > >>>>>>>>> "Quantum Owners Group" group. > >>>>>>>>> To post to this group, send email to > quantumowners@googlegroups.com > >>>>>>>>> To unsubscribe from this group, send email to > >>>>>>>>> quantumowners-unsubscr...@googlegroups.com > >>>>>>>>> For more options, visit this group at > >>>>>>>>> http://groups.google.com/group/quantumowners?hl=en >>>> > >>>>>>>>> IMPORTANT NOTE: All information presented herewith is > provided on an "As >>>>>>>>> Is" basis, without warranty or the implication > thereof. 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