by JCS » Thu Mar 18, 2021 8:47 pm
“…………..If I read it correctly, you’re killing the choke power at source whereas I’ve killed it at the final point with my switch. Is there any difference?......”
Yes. The choke power is taken from one of the wiper motor live feeds and can be left potentially vulnerable.
The advantage of killing the choke live feed at source is that every section downstream of the manual switch, that is say from the wiper motor feed, is dead when the choke is switched off. That makes the circuit much safer and protects the master feed.
If the circuit is interrupted nearer/after the otter switch, say to “make” the earth, the live feed and wiring from the wiper motor will always be live. That is not best practice as it leaves the live wiring vulnerable.
Norman
“…………..If I read it correctly, you’re killing the choke power at source whereas I’ve killed it at the final point with my switch. Is there any difference?......”
Yes. The choke power is taken from one of the wiper motor live feeds and can be left potentially vulnerable.
The advantage of killing the choke live feed at source is that every section downstream of the manual switch, that is say from the wiper motor feed, is dead when the choke is switched off. That makes the circuit much safer and protects the master feed.
If the circuit is interrupted nearer/after the otter switch, say to “make” the earth, the live feed and wiring from the wiper motor will always be live. That is not best practice as it leaves the live wiring vulnerable.
Norman