Hi William Sorry for the delay in getting back to you. Good catch on the observations in the Radian Quick Start Guide.
Link to Quick Start Guide http://www.outbackpower.com/downloads/documents/inverter_chargers/radian_8048a_4048a/gs_8048a_4048a_quick_start.pdf Link to the Radian Installation manual http://www.outbackpower.com/downloads/documents/inverter_chargers/radian_8048a_4048a/gs_8048a_4048a_install.pdf The QST statement Only one AC source can be wired at a time; use an external selector switch if more than one source is available.” Is incorrect. All Radian Inverters have 2 ac inputs, an external selector switch is unnecessary. That almost has to come from the FX inverters. I have notified the Technical Manual Writer and he will change that . Thank you On the other observations I will have to split hairs. The easiest first. In the Quick start Guide We do recommend #6 AWG THHN copper wire under the heading AC Wire Sizes and Torque Values In the Quick Start Guide Under AC Wiring Notes It is stated: The Transfer Relay is rated 60 Aac…. Then recommends up to a maximum 60 amp breaker. This is not a false statement. In the Radian Installation Manual On Page 38 it is stated: All overcurrent devices in Permanent Installations must be sized for 50 Aac or less. So perhaps a little history The relay is the same ac input relay that was used on the Trace SW inverter, and on the Xantrex SW and SW + Inverters. It is rated at 60 amp pass through. In the GS installation manual we state a 50 Amp breaker because that is what we use in the GS load centers. Throughout OutBack’s history the ac breaker size has changed between 50 and 60 amps. The relay itself has not changed. I happen to like the 50 amp breaker as it should trip before the relays get stressed. I hope this helps. Take Care All From: William Miller <will...@millersolar.com> Sent: Tuesday, August 6, 2019 6:51 PM To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Cc: Lones Tuss <lt...@outbackpower.com> Subject: Radian AC inputs ** [EXTERNAL EMAIL] - Please report any suspicious attachments, links, or requests for sensitive information to the Help Desk. ** ________________________________ Friends: I was wiling away the time perusing a Radian (GS4048/GS8048) quick-start guide that came with a recently acquired set of Radians. I was quite surprised to see the AC inputs, outputs and throughputs are shown in the quick-start guide as rated at 60 Amp AC. The guide also indicates a minimum wire size of #6AWG (does not specify CU or AL, will assume CU). I always remembered that rating to be 50 Amps AC. I checked old and new installation manuals and they all say 50 Amps AC. Am I missing something? The guide also says: “Only one AC source can be wired at a time; use an external selector switch if more than one source is available.” It really sounds like this section was cut and pasted from an FX/FXR manual by mistake. Anyone catch this? Lones, you out there? William Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com<http://www.millersolar.com/> CA Lic. 773985 Quote of the month: “As they age, batteries transition from energy storage devices to energy consuming devices.“ W. Miller
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