jea48
Responses from jea48
| Thorens TD 160 "pop" revisited A couple of snubber circuits to use. Both circuits are wired in parallel with the switch contacts First is to wire a capacitor and resistor in series and install the two across the switch contact terminals. https://www.allaboutcircuits.com/tex... | |
| Did electrician set up my dedicated subpanel correctly? @battbot The four 20A branch circuit breakers are installed on both Lines, legs. Two on L1 and two on L2. What is the main 2 pole breaker ampere rating? I can’t read the number on the breaker handle. Any idea the size of the feeder wires fee... | |
| Dedicated Circuits - Subpanel importance? Guys, When the full 240V secondary winding is used to feed a 240V load the winding works like any other single phase transformer winding. Things change when 120V loads are connected to L1, leg, and the neutral, and L2, leg, and the neutral. This... | |
| Dedicated Circuits - Subpanel importance? @lowrider57 Said: Understood. We discussed this when you advised me about replacing my meter box and outside line due to corrosion. If you remember, distortion and DC was entering my service panel. I remember the thread. Harmonic distortion ca... | |
| Dedicated Circuits - Subpanel importance? @lowrider57 said: I’ve learned about grounding code from forums such as this. But I’ve been wondering why can’t a subpanel have it’s own grounding rod as long as the main panel has a grounding rod? This is unclear to me because the subpanel grou... | |
| component grounding The new Arcam Amp I just got (I am in th US) has a US mains style cable and plugs but the ground prong is absent, and the power socket on the amp has no ground element.. The Arcam Amp AC power wiring is certified Class II, double insulated AC ... | |
| component grounding Did you guys forget that on the positive side of the circuit there’s either a fuse in the fuse box or a circuit breaker. So even if you’ve got one hand on something that’s ungrounded and you happen to touch something that shorts out… then you’re ... | |
| component grounding Forty plus years ago I don’t recall any consumer electronic equipment that used an EGC, (Equipment Grounding Conductor). Late 1970s and earlier consumer electronics came with a two wire non polarized plug. (Though the home you were living in may h... | |
| Owners of Carver Crimson 275 -Caution/Warning--Potential Increased Risk of Electric Shock GFCI is a suitable replacement for two prong outlets without a grounded wire. This is absolutely true per the NEC, but the assumption made is that the incoming AC would come into contact with the chassis and trip in time. I’m not sure if t... | |
| Owners of Carver Crimson 275 -Caution/Warning--Potential Increased Risk of Electric Shock jbhiller OP 1,115 posts 01-23-2022 3:20pm Hi @jea48 , can you explain the takeaway for us from this observation? Are you saying the B- is properly handled so we do not have to worry about other means of chassis grounding? N... | |
| Owners of Carver Crimson 275 -Caution/Warning--Potential Increased Risk of Electric Shock With Bob getting older, it was time for him to focus on what he loved-- his family, his hobby, and designing audio gear. So I recruited EJ Sarmento of Wyred 4 Sound and we bought the rights to the brand keeping Bob as our chief designer-- effecti... | |
| Owners of Carver Crimson 275 -Caution/Warning--Potential Increased Risk of Electric Shock @jbhiller CORRECTION: jea48 3,741 posts 01-19-2022 5:13pm @jbhiller , What a mess. Sell it and never look back! Good news don’t worry about the DC power supply B+ inside the amp. On the back of the amp is a fuse... | |
| Owners of Carver Crimson 275 -Caution/Warning--Potential Increased Risk of Electric Shock @gktaudio I agree the schematic shows signal and circuit grounds go to chassis, and that the sequence shows fuse, switch, and transformer. It would have been nice to show the jack connection first, rather than just the source AC symbol. Also, R... | |
| Owners of Carver Crimson 275 -Caution/Warning--Potential Increased Risk of Electric Shock @gktaudio Here is the schematic wiring diagram for the amplifier section. Note the RCA jack ground is grounded directly to the chassis. EDIT: Go to page #13. https://www.manualslib.com/manual/2038602/Bob-Carver-Crimson-275-Stereo.html | |
| Owners of Carver Crimson 275 -Caution/Warning--Potential Increased Risk of Electric Shock @10229 The AC power wiring inside the equipment is double insulated. (NO safety EGC , Equipment Grounding Conductor, is needed) Look on the back of the units. It should say Class ll wiring and or may display a square inside of a square. It cos... |