1. The price is relatively high, from 2 a 5 times higher than that of ordinary flame retardant cable.
This is the same cross section, but mineral insulated cable (cable MICC) has a great capacity overload, so if it has the same current carrying capacity, the cross section is reduced and the cost is reduced.
Naturally, it will be reduced, and considering the cost of subsequent replacement and maintenance, in fact, the cost of both is similar, but the initial investment will be relatively large.
But the service life of mineral insulated cable is 50-100 years, BTTZ life is even more than 100 years. Cables typically last more than 20 years.
2. flexibility is not good, because it uses a metal tube cover, can increase impact resistance, but the flexibility is reduced, the installation of a relatively common flame retardant cable is laborious.
But due to the strong performance it can be applied clearly or directly buried, save much cable tray cost.
3. The unions of MICC cables are prone to moisture, which reduces the fire performance and electrical performance.
Therefore, when laying and installing mineral-insulated cables, it is not easy that the environment is too humid.
4. The quality of small factories cannot meet the standard, because the process is difficult and expensive.
So some manufacturers see poor quality as profitable., so don't be greedy and small.
Once the consequences of security risks are unimaginable.