How hard is it to get stuff certified by UL? I would assume expensive and time consuming but don't really know.

aeblyve 13 hours ago | parent | next [-]

I don't know much about UL but I can say that FCC certification (also technically required) for electronics can range from about $3k to something like $30k depending on what you're doing.

($3k would be for "unintentional radiator" device, i.e., not supposed to be a radio, $30k would be for "intentional radiator" device, i.e., supposed to be a radio)

	▲	cheema33 8 hours ago \| parent \| next [-]
		FCC ensures a product doesn't cause radio interference, while UL ensures the product is safe to use and won't cause fires or electric shocks. For DIY, your primary concern is UL certification.
	▲	Joel_Mckay 12 hours ago \| parent \| prev [-]
		Because of customs product import rules, that FCC stamp is often not optional. Now if it was a dodgy seller, the stamp will not match the physical devices on rare occasion. =3

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Joel_Mckay 12 hours ago | parent | prev | next [-]

In general, almost all insurance companies will demand UL stamped hardware, and most mortgage/lease/commercial property requires insurance.

A hobby BMS is usually a bad idea, as most kits from unknown origins prioritized cost over safety. Depending where you live, prior to roof installation there may be additional zoning and signed engineering drawing requirements.

It is not hard to find UL equipment, but expect to pay about another $600 for the BMS. Yet, it is better than a house burning down, and the insurance provider denying coverage.

Have a look at local certified installer companies, and make sure to get some real references in your town. Just like most HVAC companies... some installers are just over priced scams. Some folks claim https://www.pegasussolar.com/ was inexpensive, and might be worth a call. Best regards =3

	▲	bluGill 12 hours ago \| parent [-]
		It doesn't have to be a certified install company in many places, it just needs to be inspected which most states will do for homeowners. (if your area is different contact your representative) UL or other certification is a very good idea. They can't automatically deny coverage for lack of certification, but it becomes a much harder fight for you to prove the non-certified equipment wasn't at fault.

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pocksuppet 9 hours ago | parent | prev [-]

I think expensive and time consuming, but not necessarily difficult, if the product is already safe.