Originally Posted by padlin
Working on installing an inverter, putting 1 existing circuit on it via an auto transfer relay/switch. Pulling back the leads from the existing circuit, will connect to the relays output. Will connect the switches shore power input to the existing circuit breaker.
Inline Transfer Relay
Question: The relay has stranded wire pigtails on it, need the best way to connect these to the breaker and ground bar in the breaker panel. My 2 thoughts are 1, solder the stranded ends and land those, 2, run the stranded pigtail to a small junction box and add my own solid 14/2 pigtail.
I'm thinking the latter.
It's a 15A circuit.
Pulled apart the relay's cover, the pig tails are soldered, no clean way to replace them with Romex.
Most circuit breakers are UL approved for use with solid & stranded wire.
That being said , if the breaker uses a terminal screw than just crimp a spade terminal ( stakon) on the stranded wire and attach the crimp terminal under the breaker screw . ( Not a code requirement just best practice ) If the breaker has a lug or plate style terminal then just terminate the stranded wire on the breaker.
The neutral & ground bar are also approved for solid or stranded wire.
When I worked as an electrician on commercial and industrial work , I always pulled stranded wire because unlike solid it was easier to pull and didn't require a second man to feed the wire.
I never soldered a stranded wire for terminating in a breaker panel.
Splices are not supposed to be made in a breaker panel, they are supposed to be made in junction or pull boxes and wireways .
If the relay is going to be used to switch under load , especially inductive loads , we would use a relay rated for 200% of the full load current or buy a 2 pole relay and parallel the contacts.
If you look at the main 30 amp breaker in your trailer you will find the #10 stranded wire from the service cord is directly terminated at the main breaker.